August 2017 - SPDK - Ml01.01.Org

by Santhebachalli Ganesh

Folks, My name is Ganesh, and I am working on NVEMoF performance metrics using SPDK (and kernel). I would appreciate your expert insights. I am observing errors when QD on perf is increased above >=64 most of the times. Sometimes, even for <=16 Errors are not consistent. Attached are some details. Please let me know if have any additional questions. Thanks. -Ganesh

3 years, 7 months

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Re: [SPDK] Shared library build

by Pankaj P Deshpande1

3 years, 9 months

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SPDK Blobstore support object store?

by We We

Hi， In the source code of SPDk (https://github.com/spdk/spdk/tree/master/lib <https://github.com/spdk/spdk/tree/master/lib>), we can find spdk <https://github.com/spdk/spdk>/lib <https://github.com/spdk/spdk/tree/master/lib>/bdev <https://github.com/spdk/spdk/tree/master/lib/bdev>/ module that means SPDk is able to be in favor of block store and accelerate ceph block store. However, I don not see anything about object store. Does SPDK support object store? Is there any plan to do with object store? Could someone can give me the answer? Regards, Helloway

3 years, 9 months

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Shared library build

by Jonas Pfefferle1

Hi, Is there a way to build SPDK as a shared library? If no, are there any plans to support this? Regards, Jonas

3 years, 9 months

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PCI hotplug and SPDK

by Oza Oza

Hi All, PCI hotplug support; requires creation of root bus and probe to go ahead with all PCIe configuration. Which means following APIs ae not called. pci_stop_root_bus(bus); pci_remove_root_bus(bus); And then If I run SPDK, It makes system crash with following info. Note: if the disk is connected then SPDK is fine. Otherwise it stalls the system with following crash. root@bcm958742k:~# echo 2048 > /proc/sys/vm/nr_hugepages; /usr/share/spdk/scripts/setup.sh grep: /usr/share/spdk/scripts/../include/spdk/pci_ids.h: No such[ 34.621325] pci 0008:00:00.0: PCI bridge to [bus 01] file or directory [ 34.640586] pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring [ 50.267056] pci 0000:00:00.0: PCI bridge to [bus 01] [ 50.272337] pci 0001:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring [ 65.898762] pci 0001:00:00.0: PCI bridge to [bus 01] [ 65.904015] pci 0006:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring [ 81.530437] pci 0006:00:00.0: PCI bridge to [bus 01] [ 81.535680] pci 0007:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring [ 97.162103] pci 0007:00:00.0: PCI bridge to [bus 01] [ 97.167255] Bad mode in Error handler detected on CPU6, code 0xbf000002 -- SError [ 97.174974] Internal error: Oops - bad mode: 0 [#1] SMP [ 97.180364] Modules linked in: [ 97.183515] CPU: 6 PID: 2104 Comm: bash Not tainted 4.12.0-01560-gc83093d-dirty #89 [ 97.191413] Hardware name: Stingray Combo SVK w/PCIe IOMMU (BCM958742K) (DT) [ 97.198683] task: ffff80a163a40000 task.stack: ffff80a1612b4000 [ 97.204790] PC is at 0xffff7cbdfba8 [ 97.208387] LR is at 0xffff7cb8f288 [ 97.211983] pc : [<0000ffff7cbdfba8>] lr : [<0000ffff7cb8f288>] pstate: 20000000 [ 97.219612] sp : 0000fffffe564040 [ 97.223029] x29: 0000fffffe564040 x28: 000000001054ce60 [ 97.228509] x27: 0000000000000000 x26: 00000000004e2000 [ 97.233989] x25: 00000000004e5000 x24: 0000000000000002 [ 97.239468] x23: 0000ffff7cc63638 x22: 0000000000000002 [ 97.244947] x21: 0000ffff7cc67480 x20: 000000001054db10 [ 97.250427] x19: 0000000000000002 x18: 0000000000000000 [ 97.255906] x17: 00000000004daac8 x16: 0000000000000000 [ 97.261386] x15: 0000000000000096 x14: 0000000000000000 [ 97.266865] x13: 0000000000000000 x12: 0000000000000000 [ 97.272344] x11: 0000000000000020 x10: 0101010101010101 [ 97.277824] x9 : ffffff80ffffffc8 x8 : 0000000000000040 [ 97.283303] x7 : 0000000000000001 x6 : 0000ffff7cc669f0 [ 97.288782] x5 : 0000000000015551 x4 : 0000000000000888 [ 97.294261] x3 : 0000000000000000 x2 : 0000000000000002 [ 97.299741] x1 : 000000001054db10 x0 : 0000000000000002 [ 97.305220] Process bash (pid: 2104, stack limit = 0xffff80a1612b4000) [ 97.311960] ---[ end trace a1f48abe30820241 ]--- Regards, Oza.

3 years, 9 months

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Configuring multiple NVMeoF targets using SPDK.

by Naveen Shankar

Hi All, I have a working NVMeoF setup using SPDK with me and I used the following configuration details saved in my file: [Nvmf] MaxQueuesPerSession 4 AcceptorPollRate 100 [Nvme] TransportId "trtype:PCIe traddr:0000:06:00.0" Nvme0 [Subsystem1] NQN nqn.2016-06.io.spdk:cnode1 Core 1 Listen RDMA 192.168.10.20:4420 #Host nqn.2016-06.io.spdk:init SN SPDK00000000000001 Namespace Nvme0n1 Nvme 0000:06:00.0 Can anyone please share the significance of "Host" parameter in this file? I also have a plan of configuring 2 NVMe Subsystems in a single file where one of them should be accessed by one host and the other by second host. Hence can anyone please guide me about utilizing this "Host" parameter in the configuration file to achieve the above mentioned setup? Thanks in advance. Regards, Naveen Shankar, Senior Engineer @ SanDisk | a Western Digital brand, No.143 /1, Prestige Tech Park, Prestige Excelsior Building, Marathahalli, Bengaluru, Karnataka-560103 Ext : 080 42721554 Mob: +91 9742574527 Naveen.Shankar(a)sandisk.com<mailto:Naveen.Shankar@sandisk.com> Western Digital Corporation (and its subsidiaries) E-mail Confidentiality Notice & Disclaimer: This e-mail and any files transmitted with it may contain confidential or legally privileged information of WDC and/or its affiliates, and are intended solely for the use of the individual or entity to which they are addressed. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited. If you have received this e-mail in error, please notify the sender immediately and delete the e-mail in its entirety from your system.

3 years, 9 months

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NVMeOF and multipath

by Ankit Jain

Hi Is Multipath supported with SPDK over NVMeOF Target ? If yes, how can we configure that ? Thanks Ankit Jain Western Digital Corporation (and its subsidiaries) E-mail Confidentiality Notice & Disclaimer: This e-mail and any files transmitted with it may contain confidential or legally privileged information of WDC and/or its affiliates, and are intended solely for the use of the individual or entity to which they are addressed. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited. If you have received this e-mail in error, please notify the sender immediately and delete the e-mail in its entirety from your system.

3 years, 9 months

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SPDK 17.10 Updates

by Shah, Prital B

SPDK 17.10 will be released at the end of October 2017. SPDK Roadmap<https://github.com/spdk/spdk/wiki/Roadmap> has been updated. Following features will be included : * Logical Volumes<https://trello.com/b/oTWZdkL8/logical-volumes> * Virtio scsi initatior<https://trello.com/b/Ym1jCdrR/vhost-initiator> * NVML bdev for libpmemblk<https://trello.com/c/HGr8UEtA> * JSON-based Configuration<https://trello.com/c/U97MLUCJ> * Blobstore Cli<https://trello.com/c/0E3ADk7R> * QoS in Bdev<https://trello.com/b/domGQvZc/qos-in-bdev> Each of the feature have a link to trello card which has design details. Please send inputs/comments via trello or on IRC or email. SPDK Trello Board : https://trello.com/spdk Thanks Prital

3 years, 9 months

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FW: Not able to start nvmf_tgt with NVMe device

by Ankit Jain

Hi We are trying to setup NVMeOF target using SPDK but are unable to start using "nvmf_tgt" application with an NVMe Device. Please find the steps followed below [root@host-1 nvmf_tgt]# ./nvmf_tgt -c ../../etc/spdk/mynvmf.conf.in >>>>>>>>>>>>>>>>> Trying to load the config file Starting DPDK 17.05.0 initialization... [ DPDK EAL parameters: nvmf -c 0x1 --file-prefix=spdk_pid19063 ] EAL: Detected 6 lcore(s) EAL: No free hugepages reported in hugepages-1048576kB EAL: Probing VFIO support... Total cores available: 1 Occupied cpu socket mask is 0x1 reactor.c: 314:_spdk_reactor_run: *NOTICE*: Reactor started on core 0 on socket 0 copy_engine_ioat.c: 306:copy_engine_ioat_init: *NOTICE*: Ioat Copy Engine Offload Enabled EAL: PCI device 0000:07:00.0 on NUMA socket 0 EAL: probe driver: 15b7:2001 spdk_nvme nvmf_tgt.c: 215:nvmf_tgt_create_subsystem: *NOTICE*: allocated subsystem nqn.2014-08.org.nvmexpress.discovery on lcore 0 on socket 0 nvmf_tgt.c: 215:nvmf_tgt_create_subsystem: *NOTICE*: allocated subsystem nqn.2016-06.io.spdk:cnode1 on lcore 0 on socket 0 rdma.c: 955:spdk_nvmf_rdma_create: *NOTICE*: *** RDMA Transport Init *** rdma.c:1120:spdk_nvmf_rdma_listen: *NOTICE*: *** NVMf Target Listening on 192.168.10.20 port 4420 *** conf.c: 492:spdk_nvmf_construct_subsystem: *ERROR*: Could not find namespace bdev 'Nvme0n1' nvmf_tgt.c: 276:spdk_nvmf_startup: *ERROR*: spdk_nvmf_parse_conf() failed [root@host-1 nvmf_tgt]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 931.5G 0 disk ├─sda2 8:2 0 931G 0 part │ ├─centos-swap 253:1 0 15.7G 0 lvm [SWAP] │ ├─centos-home 253:2 0 865.3G 0 lvm /home │ └─centos-root 253:0 0 50G 0 lvm / └─sda1 8:1 0 500M 0 part /boot nvme0n1 259:0 0 1.8T 0 disk The Configuration file used is: [Nvmf] MaxQueuesPerSession 4 AcceptorPollRate 10000 [Nvme] TransportId "trtype:PCIe traddr:0000:07:00.0" Nvme0 #[Malloc] # NumberOfLuns 1 # LunSizeInMB 512 [Subsystem1] NQN nqn.2016-06.io.spdk:cnode1 Core 0 #Mode Direct Listen RDMA 192.168.10.20:4420 #Host nqn.2016-06.io.spdk:init SN SPDK00000000000001 Namespace Nvme0n1 #NVMe 0000:07:00.0 Can anyone please let me know what went wrong with this configuration when NVMe device is used. Please note that this is working fine when malloc devices are configured instead of NVMe Devices. Thanks Ankit Jain Western Digital Corporation (and its subsidiaries) E-mail Confidentiality Notice & Disclaimer: This e-mail and any files transmitted with it may contain confidential or legally privileged information of WDC and/or its affiliates, and are intended solely for the use of the individual or entity to which they are addressed. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited. If you have received this e-mail in error, please notify the sender immediately and delete the e-mail in its entirety from your system.

3 years, 9 months

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SPDK errors

by Santhebachalli Ganesh

PS: Have provided setup info later. Getting errors when QD on perf is increased above >=64 most of the times. Sometimes, even for <=16 Errors are not consistent. Provided a sample here. Hope someone can provide some insights. Thanks, Ganesh --- initiator cmd line sudo ./perf -q 32 -s 512 -w randread -t 30 -r 'trtype:RDMA adrfam:IPv4 traddr:1.1.1.80 trsvcid:4420 subnqn:nqn.2016-06.io.spdk:cnode1' -c 0x2 --errors on stdout on target Aug 24 17:14:09 dell730-80 nvmf[38006]: nvme_pcie.c:1910:nvme_pcie_qpair_process_completions: *ERROR*: cpl does not map to outstanding cmd Aug 24 17:14:09 dell730-80 nvmf[38006]: nvme_qpair.c: 284:nvme_qpair_print_completion: *NOTICE*: SUCCESS (00/00) sqid:1 cid:201 cdw0:0 sqhd:0094 p:0 m:0 dnr:0 Aug 24 17:14:09 dell730-80 nvmf[38006]: nvme_pcie.c:1910:nvme_pcie_qpair_process_completions: *ERROR*: cpl does not map to outstanding cmd Aug 24 17:14:09 dell730-80 nvmf[38006]: nvme_qpair.c: 284:nvme_qpair_print_completion: *NOTICE*: SUCCESS (00/00) sqid:1 cid:201 cdw0:0 sqhd:0094 p:0 m:0 dnr:0 Aug 24 17:14:09 dell730-80 nvmf[38006]: nvme_pcie.c:1910:nvme_pcie_qpair_process_completions: *ERROR*: cpl does not map to outstanding cmd Aug 24 17:14:09 dell730-80 nvmf[38006]: nvme_qpair.c: 284:nvme_qpair_print_completion: *NOTICE*: SUCCESS (00/00) sqid:1 cid:198 cdw0:0 sqhd:0094 p:0 m:0 dnr:0 Aug 24 17:14:09 dell730-80 nvmf[38006]: nvme_pcie.c:1910:nvme_pcie_qpair_process_completions: *ERROR*: cpl does not map to outstanding cmd Aug 24 17:14:09 dell730-80 nvmf[38006]: nvme_qpair.c: 284:nvme_qpair_print_completion: *NOTICE*: SUCCESS (00/00) sqid:1 cid:222 cdw0:0 sqhd:0094 p:0 m:0 dnr:0 Aug 24 17:14:09 dell730-80 nvmf[38006]: nvme_pcie.c:1910:nvme_pcie_qpair_process_completions: *ERROR*: cpl does not map to outstanding cmd Aug 24 17:14:09 dell730-80 nvmf[38006]: nvme_qpair.c: 284:nvme_qpair_print_completion: *NOTICE*: SUCCESS (00/00) sqid:1 cid:222 cdw0:0 sqhd:0094 p:0 m:0 dnr:0 Aug 24 17:14:09 dell730-80 nvmf[38006]: bdev_nvme.c:1248:bdev_nvme_queue_cmd: *ERROR*: readv failed: rc = -12 Aug 24 17:14:09 dell730-80 nvmf[38006]: bdev_nvme.c:1248:bdev_nvme_queue_cmd: *ERROR*: readv failed: rc = -12 Aug 24 17:14:09 dell730-80 nvmf[38006]: bdev_nvme.c:1248:bdev_nvme_queue_cmd: *ERROR*: readv failed: rc = -12 Aug 24 17:14:09 dell730-80 nvmf[38006]: bdev_nvme.c:1248:bdev_nvme_queue_cmd: *ERROR*: readv failed: rc = -12 Aug 24 17:14:09 dell730-80 nvmf[38006]: bdev_nvme.c:1248:bdev_nvme_queue_cmd: *ERROR*: readv failed: rc = -12 Aug 24 17:14:13 dell730-80 nvmf[38006]: rdma.c:1622:spdk_nvmf_rdma_poll: *ERROR*: CQ error on CQ 0x7f8a3803cae0, Request 0x140231622050400 (12): transport retry counter exceeded --- errros seen on client nvme_rdma.c:1470:nvme_rdma_qpair_process_completions: *ERROR*: CQ error on Queue Pair 0x1fdb580, Response Index 33408520 (13): RNR retry counter exceeded nvme_rdma.c:1470:nvme_rdma_qpair_process_completions: *ERROR*: CQ error on Queue Pair 0x1fdb580, Response Index 33408016 (5): Work Request Flushed Error nvme_rdma.c:1470:nvme_rdma_qpair_process_completions: *ERROR*: CQ error on Queue Pair 0x1fdb580, Response Index 14 (5): Work Request Flushed Error nvme_rdma.c:1470:nvme_rdma_qpair_process_completions: *ERROR*: CQ error on Queue Pair 0x1fdb580, Response Index 15 (5): Work Request Flushed Error --- Some info on setup Same HW/SW on target and initiator. adminuser@dell730-80:~> hostnamectl Static hostname: dell730-80 Icon name: computer-server Chassis: server Machine ID: b5abb0fe67afd04c59521c40599b3115 Boot ID: f825aa6338194338a6f80125caa836c7 Operating System: openSUSE Leap 42.3 CPE OS Name: cpe:/o:opensuse:leap:42.3 Kernel: Linux 4.12.8-1.g4d7933a-default Architecture: x86-64 adminuser@dell730-80:~> lscpu | grep -i socket Core(s) per socket: 12 Socket(s): 2 2MB and/or 1GB pages set, Latest spdk/dpdk from respective GIT, compiled with RDMA flag, nvmf.conf file: (have played around with the values) reactor mask 0x5555 AcceptorCore 2 1 - 3 Subsystems on cores 4,8,10 adminuser@dell730-80:~> sudo gits/spdk/app/nvmf_tgt/nvmf_tgt -c gits/spdk/etc/spdk/nvmf.conf -p 6 PCI, NVME cards (16GB) adminuser@dell730-80:~> sudo lspci | grep -i pmc 04:00.0 Non-Volatile memory controller: PMC-Sierra Inc. Device f117 (rev 06) 06:00.0 Non-Volatile memory controller: PMC-Sierra Inc. Device f117 (rev 06) 85:00.0 Non-Volatile memory controller: PMC-Sierra Inc. Device f117 (rev 06) Network cards: (latest associated FW from vendor) adminuser@dell730-80:~> sudo lspci | grep -i connect 05:00.0 Ethernet controller: Mellanox Technologies MT27520 Family [ConnectX-3 Pro]

3 years, 9 months

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SPDK August 2017